10 Best Fuel Efficient Generator 2025 in the United States

The Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator is a powerful and versatile option for home backup power needs. It supports both gasoline and propane, offering flexibility depending on fuel availability. With 9500 running watts and 12500 peak watts on gasoline (8500 running watts and 11200 peak watts on propane), it's capable of handling substantial loads, making it suitable for residential use during power outages or emergencies.

The generator features a remote electric start and a transfer switch ready design, adding convenience for users who want easy operations and seamless power transitions. It also comes with multiple protected outlets, including standard household receptacles and RV-ready outlets, enhancing its usability for various applications. The runtime of up to 12 hours on a 6.6-gallon fuel tank is quite practical, though fuel efficiency might vary depending on the load.

The built-in VFT display provides real-time updates on voltage output, frequency, and lifetime hours, which is helpful for monitoring performance. However, the generator's weight of 210 pounds could be a drawback for those seeking high portability, despite being labeled as portable. Additionally, the noise level is not specified, but generators of this size typically produce a considerable amount of noise, which could be a concern for some users. While it doesn’t include inverter technology, which is essential for sensitive electronics, it’s an excellent choice for general home backup with robust power output and dual fuel capability.

The Westinghouse 13500 Peak Watt Dual Fuel Portable Generator is a solid choice for a home backup power source, especially if you want flexibility in fuel options. It runs on both gasoline and propane, which can be handy depending on what fuel is more available or economical for you. With 13,500 peak watts and 10,500 running watts on gasoline, it can handle heavy loads like multiple appliances or power tools comfortably. On propane, the peak wattage is a bit lower but still substantial.

One of the standout features is its runtime—up to 19 hours on a full 9.5-gallon tank, which means it can keep your essentials running for a long stretch without needing a refill. It also comes with a remote electric start, making it easier to operate, plus safety features like automatic low oil shutdown and carbon monoxide sensors.

In terms of portability, it weighs about 230 pounds, so it’s not lightweight and will need some effort or wheels to move around, which might be a drawback if you want something more mobile. It has multiple outlets, including ones ready for RV and transfer switches, adding to its versatility. This Westinghouse model fits well if you want a powerful, dual-fuel generator with long runtime and convenient features for home backup use. Keep in mind it’s fairly heavy and lacks inverter technology, so it won’t provide the super clean power that sensitive electronics might require.

The Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Generator is a versatile and powerful option for those needing a reliable backup power source for homes or portable power for outdoor activities. It can run on gasoline, propane, and natural gas, providing flexibility in fuel choice. The generator offers substantial power with 14,500 peak watts on gasoline, 13,500 peak watts on propane, and 12,000 peak watts on natural gas, making it suitable for larger homes or demanding power needs.

Its runtime is impressive, offering up to 19 hours on a full 9.5-gallon gas tank or up to 7 hours on a 20 lb. propane tank, ensuring prolonged operation during power outages or extended outdoor use. The generator features a remote electric start for convenience, and it's transfer switch ready, making it easy to integrate into home power systems. It also includes safety features like overload protection, automatic voltage regulation, and a CO sensor.

However, it is quite heavy at 230 pounds, which may affect portability despite its sturdy wheels. Its fuel efficiency is commendable, especially with the ability to use different fuel types. The 3-year limited warranty and nationwide customer service network add to its reliability. This generator is best suited for homeowners looking for a robust backup power source or those needing dependable power in remote locations with varying fuel availability.